Fox News has the Associated Press story:
Britain’s High Court brought government plans for leaving the European Union screeching to a halt Thursday, ruling that the prime minister can’t trigger the U.K.’s exit from the bloc without parliamentary approval.
The government said it would go to the Supreme Court to challenge the ruling, which if upheld could prevent it starting exit talks by March 31 as planned.
The pound, which has lost about a fifth of its value since the June 23 decision to leave the EU, shot back up on the verdict, rising 1.1 percent to $1.2430.